Definition of Cystoscope

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Cystoscope: An optical instrument (a scope) that is inserted through the urethra into the bladder.

A cystoscope has two ports. Aside from the optical port that permits one to see inside the bladder, there is an additional port in the instrument for insertion of various instruments designed for biopsy (removal of tissue samples), treatment of small bladder tumors, removal of stones from the bladder, and removal of the prostate (prostatectomy).